Generated by Cython 3.0.0
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Click on a line that starts with a "+" to see the C code that Cython generated for it.
Raw output: clm.c
+0001: # cython: c_string_type=unicode
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0002: # cython: c_string_encoding=utf8
0003:
+0004: import ctypes
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+0005: from functools import singledispatch, partial
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+0006: import math
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+0007: import random
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+0008: import subprocess
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+0009: import tempfile
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+0010: import time
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+0011: import types
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0012: import cython
0013: from cython.cimports.cpython.mem import PyMem_Malloc, PyMem_Realloc, PyMem_Free
0014: from cython cimport view
+0015: import numpy as np
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0016: cimport numpy as np
+0017: import numpy.typing as npt
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0018: cimport pysndlib.cclm as cclm
0019: cimport pysndlib.csndlib as csndlib
+0020: from pysndlib.sndlib import Sample, Header
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+0021: import sys
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0022:
0023:
0024:
0025:
+0026: np.import_array()
__pyx_t_44 = __pyx_f_5numpy_import_array(); if (unlikely(__pyx_t_44 == ((int)-1))) __PYX_ERR(0, 26, __pyx_L1_error)
0027:
0028:
0029:
0030: # --------------- clm enums ---------------- #
+0031: cpdef enum Interp:
enum __pyx_t_8pysndlib_3clm_Interp {
__pyx_e_8pysndlib_3clm_NONE,
__pyx_e_8pysndlib_3clm_LINEAR,
__pyx_e_8pysndlib_3clm_SINUSOIDAL,
__pyx_e_8pysndlib_3clm_ALL_PASS,
__pyx_e_8pysndlib_3clm_LAGRANGE,
__pyx_e_8pysndlib_3clm_BEZIER,
__pyx_e_8pysndlib_3clm_HERMITE
};
0032: """
0033: various interpolation types
0034: """
0035: NONE, LINEAR,SINUSOIDAL, ALL_PASS, LAGRANGE, BEZIER, HERMITE
0036:
+0037: cpdef enum Window:
enum __pyx_t_8pysndlib_3clm_Window {
__pyx_e_8pysndlib_3clm_RECTANGULAR,
__pyx_e_8pysndlib_3clm_HANN,
__pyx_e_8pysndlib_3clm_WELCH,
__pyx_e_8pysndlib_3clm_PARZEN,
__pyx_e_8pysndlib_3clm_BARTLETT,
__pyx_e_8pysndlib_3clm_HAMMING,
__pyx_e_8pysndlib_3clm_BLACKMAN2,
__pyx_e_8pysndlib_3clm_BLACKMAN3,
__pyx_e_8pysndlib_3clm_BLACKMAN4,
__pyx_e_8pysndlib_3clm_EXPONENTIAL,
__pyx_e_8pysndlib_3clm_RIEMANN,
__pyx_e_8pysndlib_3clm_KAISER,
__pyx_e_8pysndlib_3clm_CAUCHY,
__pyx_e_8pysndlib_3clm_POISSON,
__pyx_e_8pysndlib_3clm_GAUSSIAN,
__pyx_e_8pysndlib_3clm_TUKEY,
__pyx_e_8pysndlib_3clm_DOLPH_CHEBYSHEV,
__pyx_e_8pysndlib_3clm_HANN_POISSON,
__pyx_e_8pysndlib_3clm_CONNES,
__pyx_e_8pysndlib_3clm_SAMARAKI,
__pyx_e_8pysndlib_3clm_ULTRASPHERICAL,
__pyx_e_8pysndlib_3clm_BARTLETT_HANN,
__pyx_e_8pysndlib_3clm_BOHMAN,
__pyx_e_8pysndlib_3clm_FLAT_TOP,
__pyx_e_8pysndlib_3clm_BLACKMAN5,
__pyx_e_8pysndlib_3clm_BLACKMAN6,
__pyx_e_8pysndlib_3clm_BLACKMAN7,
__pyx_e_8pysndlib_3clm_BLACKMAN8,
__pyx_e_8pysndlib_3clm_BLACKMAN9,
__pyx_e_8pysndlib_3clm_BLACKMAN10,
__pyx_e_8pysndlib_3clm_RV2,
__pyx_e_8pysndlib_3clm_RV3,
__pyx_e_8pysndlib_3clm_RV4,
__pyx_e_8pysndlib_3clm_MLT_SINE,
__pyx_e_8pysndlib_3clm_PAPOULIS,
__pyx_e_8pysndlib_3clm_DPSS,
__pyx_e_8pysndlib_3clm_SINC
};
0038: """
0039: many useful windows
0040: """
0041: RECTANGULAR, HANN, WELCH, PARZEN, BARTLETT, HAMMING, BLACKMAN2, BLACKMAN3, BLACKMAN4, EXPONENTIAL, RIEMANN, KAISER, CAUCHY, POISSON, GAUSSIAN, TUKEY, DOLPH_CHEBYSHEV, HANN_POISSON, CONNES, SAMARAKI, ULTRASPHERICAL, BARTLETT_HANN, BOHMAN, FLAT_TOP, BLACKMAN5, BLACKMAN6, BLACKMAN7, BLACKMAN8, BLACKMAN9, BLACKMAN10, RV2, RV3, RV4, MLT_SINE, PAPOULIS, DPSS, SINC,
0042:
+0043: cpdef enum Spectrum:
enum __pyx_t_8pysndlib_3clm_Spectrum {
__pyx_e_8pysndlib_3clm_IN_DB,
__pyx_e_8pysndlib_3clm_NORMALIZED,
__pyx_e_8pysndlib_3clm_RAW
};
0044: """
0045: types of normalizations when using the spectrum function. The results are in dB if IN_DB, or linear and normalized to 1.0 NORMALIZED, or linear unnormalized RAW
0046: """
0047: IN_DB, NORMALIZED, RAW
0048:
+0049: cpdef enum Polynomial:
enum __pyx_t_8pysndlib_3clm_Polynomial {
__pyx_e_8pysndlib_3clm_EITHER_KIND,
__pyx_e_8pysndlib_3clm_FIRST_KIND,
__pyx_e_8pysndlib_3clm_SECOND_KIND,
__pyx_e_8pysndlib_3clm_BOTH_KINDS
};
0050: """
0051: used for polynomial based gens
0052: """
0053: EITHER_KIND, FIRST_KIND, SECOND_KIND, BOTH_KINDS
0054:
0055:
0056:
0057: # --------------- function types for ctypes ---------------- #
+0058: INPUTCALLBACK = ctypes.CFUNCTYPE(ctypes.c_double, ctypes.c_void_p, ctypes.c_int)
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+0059: EDITCALLBACK = ctypes.CFUNCTYPE(ctypes.c_int, ctypes.c_void_p)
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+0148: csndlib.mus_error_set_handler(<csndlib.mus_error_handler_t *>clm_error_handler)
(void)(mus_error_set_handler(((mus_error_handler_t *)__pyx_f_8pysndlib_3clm_clm_error_handler)));
0149:
0150:
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0153:
0154:
0155:
0156: # todo add mus_set_xcoeff and mus_set_ycoeff
0157:
0158: # --------------- extension types ---------------- #
0159:
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PyObject_HEAD
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input_cb _inputcallback;
edit_cb _editcallback;
analyze_cb _analyzecallback;
synthesize_cb _synthesizecallback;
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mus_float_t *_data_ptr;
PyArrayObject *_data;
mus_float_t *_xcoeffs_ptr;
PyArrayObject *_xcoeffs;
mus_float_t *_ycoeffs_ptr;
PyArrayObject *_ycoeffs;
mus_float_t *_pv_amp_increments_ptr;
PyArrayObject *_pv_amp_increments;
mus_float_t *_pv_amps_ptr;
PyArrayObject *_pv_amps;
mus_float_t *_pv_freqs_ptr;
PyArrayObject *_pv_freqs;
mus_float_t *_pv_phases_ptr;
PyArrayObject *_pv_phases;
mus_float_t *_pv_phase_increments_ptr;
PyArrayObject *_pv_phase_increments;
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PyObject *(*set_up_xcoeffs)(struct __pyx_obj_8pysndlib_3clm_mus_any *, int __pyx_skip_dispatch);
PyObject *(*set_up_ycoeffs)(struct __pyx_obj_8pysndlib_3clm_mus_any *, int __pyx_skip_dispatch);
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0161: """
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0164: instances of this class have the following properties, which may be
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0166:
0167:
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0173: cdef cclm.edit_cb _editcallback
0174: cdef cclm.analyze_cb _analyzecallback
0175: cdef cclm.synthesize_cb _synthesizecallback
0176: cdef list _cache
0177: cdef cclm.mus_float_t* _data_ptr
0178: cdef np.ndarray _data
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0180: cdef np.ndarray _xcoeffs
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0182: cdef np.ndarray _ycoeffs
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0184: cdef np.ndarray _pv_amp_increments
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0186: cdef np.ndarray _pv_amps
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0188: cdef np.ndarray _pv_freqs
0189: cdef cclm.mus_float_t* _pv_phases_ptr
0190: cdef np.ndarray _pv_phases
0191: cdef cclm.mus_float_t* _pv_phase_increments_ptr
0192: cdef np.ndarray _pv_phase_increments
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0224:
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0318: """
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struct __pyx_opt_args_8pysndlib_3clm_ndarray2file {
int __pyx_n;
PyObject *length;
PyObject *sr;
PyObject *sample_type;
PyObject *header_type;
PyObject *comment;
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0648: """
0649: write an ndarray of samples to file
0650:
0651: :param filename: name of file
0652: :param arr: np.ndarray of samples
0653: :param length: length of samples to write. if None write all
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0658: :rtype: int
0659:
0660:
0661: """
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0669:
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0671:
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if (unlikely(__pyx_t_2)) {
/* … */
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PyErr_NoMemory(); __PYX_ERR(0, 673, __pyx_L1_error)
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0681:
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1896: """
1897: value of envelope env at x.
1898:
1899: :param x: location \in envelope
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1904:
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1906: # but no other way to do it with cython without changing sndlib code
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1920:
1921:
1922: # ---------------- pulsed-env ---------------- #
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1965: :param gen: gen
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1969:
1970: # todo envelope-interp different than env-interp
1971:
1972: # ---------------- table-lookup ---------------- #
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+1976: size: Optional[int]=CLM.table_size,
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1978: """
1979: return a new table_lookup generator. the default table size is 512; use size to set some other
1980: size, or pass your own list/array as the 'wave'.
1981:
1982: :param frequency: frequency of gen \in hz
1983: :param initial_phase: initial phase of gen \in radians
1984: :param wave: np.ndarray if provided is waveform
1985: :param size: if no wave provided, this will allocate a table of size
1986: :param interp_type: type of interpolation used
1987: :return: table_lookup gen
1988: :rtype: mus_any
1989: """
1990:
+1991: check_range('frequency', frequency, 0.0, get_srate() / 2)
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1992:
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if (__pyx_t_7) {
/* … */
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1995:
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if (__pyx_t_7) {
/* … */
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+1997: wave = np.array(wave, dtype=np.double)
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1998:
+1999: check_ndim(wave)
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2000:
+2001: cdef double [:] wave_view = wave
__pyx_t_9 = __Pyx_PyObject_to_MemoryviewSlice_ds_double(__pyx_v_wave, PyBUF_WRITABLE); if (unlikely(!__pyx_t_9.memview)) __PYX_ERR(0, 2001, __pyx_L1_error) __pyx_v_wave_view = __pyx_t_9; __pyx_t_9.memview = NULL; __pyx_t_9.data = NULL;
2002:
2003: #print(frequency, initial_phase, wave, size, interp_type)
+2004: gen = mus_any.from_ptr(cclm.mus_make_table_lookup(frequency, initial_phase, &wave_view[0], size, interp_type))
__pyx_t_10 = __pyx_PyFloat_AsDouble(__pyx_v_frequency); if (unlikely((__pyx_t_10 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 2004, __pyx_L1_error) __pyx_t_11 = __pyx_PyFloat_AsDouble(__pyx_v_initial_phase); if (unlikely((__pyx_t_11 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 2004, __pyx_L1_error) __pyx_t_12 = 0; __pyx_t_6 = -1; if (__pyx_t_12 < 0) { __pyx_t_12 += __pyx_v_wave_view.shape[0]; if (unlikely(__pyx_t_12 < 0)) __pyx_t_6 = 0; } else if (unlikely(__pyx_t_12 >= __pyx_v_wave_view.shape[0])) __pyx_t_6 = 0; if (unlikely(__pyx_t_6 != -1)) { __Pyx_RaiseBufferIndexError(__pyx_t_6); __PYX_ERR(0, 2004, __pyx_L1_error) } __pyx_t_13 = __Pyx_PyInt_As_mus_long_t(__pyx_v_size); if (unlikely((__pyx_t_13 == ((mus_long_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 2004, __pyx_L1_error) __pyx_t_14 = ((mus_interp_t)__Pyx_PyInt_As_mus_interp_t(__pyx_v_interp_type)); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 2004, __pyx_L1_error) __pyx_t_8 = ((PyObject *)__pyx_vtabptr_8pysndlib_3clm_mus_any->from_ptr(mus_make_table_lookup(__pyx_t_10, __pyx_t_11, (&(*((double *) ( /* dim=0 */ (__pyx_v_wave_view.data + __pyx_t_12 * __pyx_v_wave_view.strides[0]) )))), __pyx_t_13, __pyx_t_14), NULL)); if (unlikely(!__pyx_t_8)) __PYX_ERR(0, 2004, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_8); __pyx_v_gen = ((struct __pyx_obj_8pysndlib_3clm_mus_any *)__pyx_t_8); __pyx_t_8 = 0;
+2005: gen.cache_append(wave)
__pyx_t_8 = ((struct __pyx_vtabstruct_8pysndlib_3clm_mus_any *)__pyx_v_gen->__pyx_vtab)->cache_append(__pyx_v_gen, __pyx_v_wave, 0); if (unlikely(!__pyx_t_8)) __PYX_ERR(0, 2005, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_8); __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
+2006: return gen
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2007:
+2008: cpdef cython.double table_lookup(gen: mus_any, fm: Optional[float]=None):
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2061: """
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2071: :rtype: mus_any
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2796: """
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2799:
2800: :param a0: coefficient
2801: :param a1: coefficient
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2804: """
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2808: """
2809: one zero filter of input.
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2812: :param insig: input
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2818: """
2819: returns True if gen is a one_zero.
2820:
2821: :param gen: gen
2822: :rtype: bool
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2825:
2826: # make def for *args. are there other ways
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2828: """
2829: return a new two_pole filter: y(n) = a0 x(n) - b1 y(n-1) - b2 y(n-2).
2830:
2831: :param frequency: Center frequency \in Hz
2832: :param radius: Radius of filter. Refers to the unit circle, so it should be between 0.0 and (less than) 1.0.
2833: :param kwargs: If frequency and radius not provided, these should be keyword arguments 'a0', 'b1', 'b2'
2834: :return: two_pole gen
2835: :rtype: mus_any
2836: """
2837:
+2838: if kwargs:
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+2840: return mus_any.from_ptr(cclm.mus_make_two_pole(kwargs.get('a0'), kwargs.get('b1'), kwargs.get('b2')))
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2841: else:
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2844: else:
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/* … */
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2847: else:
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2849:
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2851: """
2852: two pole filter of input.
2853:
2854: :param gen: two_pole gen
2855: :param insig: input
2856: :rtype: float
2857:
2858: """
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2860:
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2862: """
2863: returns True if gen is a two_pole.
2864:
2865: :param gen: gen
2866: :rtype: bool
2867: """
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2869:
2870: # make def for *args. are there other ways
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2872: """
2873: return a new two_zero filter: y(n) = a0 x(n) + a1 x(n-1) + a2 x(n-2).
2874:
2875: :param frequency: Center frequency \in Hz
2876: :param radius: Radius of filter. Refers to the unit circle, so it should be between 0.0 and (less than) 1.0.
2877: :param kwargs: If frequency and radius not provided, these should be keyword arguments 'a0', 'a1', 'a2'
2878: :return: two_zero gen
2879: :rtype: mus_any
2880: """
2881:
+2882: if kwargs:
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+2883: if 'a0' in kwargs and 'a1' in kwargs and 'a1' in kwargs:
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+2884: return mus_any.from_ptr(cclm.mus_make_two_zero(kwargs.get('a0'), kwargs.get('a1'), kwargs.get('a2')))
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2885: else:
+2886: raise KeyError(f'Filter needs values for a0, a1, a2')
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3394: """
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3396:
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3400:
3401: """
3402:
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3483:
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/* … */
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4340: expansion: Optional[float]=1.0,
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4348:
4349: """
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4357:
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4367:
4368: """
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4444: function; if it returns True, the default analysis code is also called. 'edit', if given, takes 1 arg,
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4446: the generator; it is called to get the current vocoder output.
4447:
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4449: :param fft_size: fft size used
4450: :param overlap: how many analysis stages overlap
4451: :param interp: samples between fft
4452: :param pitch: pitch scaling ratio
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4454: :param edit: if used, overrides default. functions of one argument, the phase_vocoder mus_any. change amplitudes and phases
4455: :param synthesize: if used, overrides default. unctions of one argument, the phase_vocoder mus_any.
4456: :return: phase_vocoder gen
4457:
4458: """
4459:
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4461: cdef cclm.edit_cb cy_edit_f_ptr
4462: cdef cclm.analyze_cb cy_analyze_f_ptr
4463: cdef cclm.synthesize_cb cy_synthesize_f_ptr
4464:
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__Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
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__Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
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__Pyx_DECREF_SET(__pyx_v_reverb_channels, __pyx_t_3);
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__pyx_L8:;
4760:
+4761: if isinstance(output, mus_any):
__pyx_t_1 = __Pyx_TypeCheck(__pyx_v_output, __pyx_ptype_8pysndlib_3clm_mus_any);
if (__pyx_t_1) {
/* … */
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4762:
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__pyx_t_3 = __pyx_v_output;
__Pyx_INCREF(__pyx_t_3);
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__pyx_t_3 = 0;
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__pyx_t_3 = __pyx_v_revout;
__Pyx_INCREF(__pyx_t_3);
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__pyx_t_3 = 0;
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__pyx_t_1 = (__pyx_v_revout != Py_None);
if (__pyx_t_1) {
/* … */
goto __pyx_L10;
}
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__pyx_t_6 = __pyx_PyFloat_AsDouble(__pyx_v_degree); if (unlikely((__pyx_t_6 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4766, __pyx_L1_error) __pyx_t_7 = __pyx_PyFloat_AsDouble(__pyx_v_distance); if (unlikely((__pyx_t_7 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4766, __pyx_L1_error) __pyx_t_8 = __pyx_PyFloat_AsDouble(__pyx_v_reverb); if (unlikely((__pyx_t_8 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4766, __pyx_L1_error) __pyx_t_5 = __Pyx_PyInt_As_int(__pyx_v_channels); if (unlikely((__pyx_t_5 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 4766, __pyx_L1_error) __pyx_t_9 = __Pyx_PyInt_As_int(__pyx_v_reverb_channels); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 4766, __pyx_L1_error) __pyx_t_10 = ((mus_interp_t)__Pyx_PyInt_As_mus_interp_t(__pyx_v_interp_type)); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 4766, __pyx_L1_error) __pyx_t_3 = ((PyObject *)__pyx_vtabptr_8pysndlib_3clm_mus_any->from_ptr(mus_make_locsig(__pyx_t_6, __pyx_t_7, __pyx_t_8, __pyx_t_5, __pyx_v_out->_ptr, __pyx_t_9, __pyx_v_rout->_ptr, __pyx_t_10), NULL)); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 4766, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_3); __pyx_v_res = ((struct __pyx_obj_8pysndlib_3clm_mus_any *)__pyx_t_3); __pyx_t_3 = 0;
4767: else:
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/*else*/ {
__pyx_t_8 = __pyx_PyFloat_AsDouble(__pyx_v_degree); if (unlikely((__pyx_t_8 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4768, __pyx_L1_error)
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4770:
4771: # todo: what if revout is not an iterable? while possible not going to deal with it right now :)
+4772: elif is_list_or_ndarray(output):
__pyx_t_3 = __pyx_f_8pysndlib_3clm_is_list_or_ndarray(__pyx_v_output, 0); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 4772, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_3); __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely((__pyx_t_1 < 0))) __PYX_ERR(0, 4772, __pyx_L1_error) __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0; if (likely(__pyx_t_1)) { /* … */ }
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__pyx_t_1 = (__pyx_v_reverb_channels == Py_None);
if (__pyx_t_1) {
/* … */
}
+4774: reverb_channels = 0
__Pyx_INCREF(__pyx_int_0); __Pyx_DECREF_SET(__pyx_v_reverb_channels, __pyx_int_0);
4775:
+4776: res = mus_any.from_ptr(cclm.mus_make_locsig(degree, distance, reverb, channels, NULL, reverb_channels, NULL, interp_type))
__pyx_t_6 = __pyx_PyFloat_AsDouble(__pyx_v_degree); if (unlikely((__pyx_t_6 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4776, __pyx_L1_error) __pyx_t_7 = __pyx_PyFloat_AsDouble(__pyx_v_distance); if (unlikely((__pyx_t_7 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4776, __pyx_L1_error) __pyx_t_8 = __pyx_PyFloat_AsDouble(__pyx_v_reverb); if (unlikely((__pyx_t_8 == ((mus_float_t)-1)) && PyErr_Occurred())) __PYX_ERR(0, 4776, __pyx_L1_error) __pyx_t_5 = __Pyx_PyInt_As_int(__pyx_v_channels); if (unlikely((__pyx_t_5 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 4776, __pyx_L1_error) __pyx_t_9 = __Pyx_PyInt_As_int(__pyx_v_reverb_channels); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 4776, __pyx_L1_error) __pyx_t_10 = ((mus_interp_t)__Pyx_PyInt_As_mus_interp_t(__pyx_v_interp_type)); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 4776, __pyx_L1_error) __pyx_t_3 = ((PyObject *)__pyx_vtabptr_8pysndlib_3clm_mus_any->from_ptr(mus_make_locsig(__pyx_t_6, __pyx_t_7, __pyx_t_8, __pyx_t_5, NULL, __pyx_t_9, NULL, __pyx_t_10), NULL)); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 4776, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_3); __pyx_v_res = ((struct __pyx_obj_8pysndlib_3clm_mus_any *)__pyx_t_3); __pyx_t_3 = 0;
+4777: cclm.mus_locsig_set_detour(res._ptr, <cclm.detour_cb>locsig_detour_callback_func)
mus_locsig_set_detour(__pyx_v_res->_ptr, ((detour_cb)__pyx_f_8pysndlib_3clm_locsig_detour_callback_func));
4778:
+4779: return res
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4780:
4781: else:
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__pyx_t_3 = __Pyx_PyObject_FormatSimple(((PyObject *)Py_TYPE(__pyx_v_output)), __pyx_empty_unicode); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 4782, __pyx_L1_error)
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4783:
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CYTHON_FALLTHROUGH;
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CYTHON_FALLTHROUGH;
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switch (__pyx_nargs) {
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if (likely((values[0] = __Pyx_GetKwValue_FASTCALL(__pyx_kwds, __pyx_kwvalues, __pyx_n_s_gen)) != 0)) kw_args--;
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4785: """
4786: locsig 'gen' channel 'chan' scaler.
4787:
4788: :param gen: locsig gen
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4889:
4890:
4891: #########################################
4892: # basic file reading/writing to/from nympy arrays
4893: # note all of this assumes numpy dtype is np.double
4894: # also assumes shape is (chan, length)
4895: # a mono file that is 8000 samples long should
4896: # be a numpy array created with something like
4897: # arr = np.zeroes((1,8000), dtype=np.double)
4898: # librosa follows this convention
4899: # todo : look at allowing something like np.zeroes((8000), dtype=np.double)
4900: # to just be treated as mono sound buffer
4901: # the python soundfile library does this differently
4902: # and would use
4903: # arr = np.zeros((8000,1), dtype=np.double))
4904: # this seems less intuitive to me
4905: # very issue to translate with simple np.transpose()
4906:
4907:
4908: # cpdef sndinfo(filename):
4909: # """returns a dictionary of info about a sound file including write date (data), sample rate (srate),
4910: # channels (chans), length in samples (samples), length in second (length), comment (comment), and loop information (loopinfo)"""
4911: # date = csndlib.mus_sound_write_date(filename)
4912: # srate = csndlib.mus_sound_srate(filename)
4913: # chans = csndlib.mus_sound_chans(filename)
4914: # samples = csndlib.mus_sound_samples(filename)
4915: # comment = csndlib.mus_sound_comment(filename)
4916: # length = samples / (chans * srate)
4917: #
4918: # header_type = header(mus_sound_header_type(filename))
4919: # sample_type = sample(mus_sound_sample_type(filename))
4920: #
4921: # loop_info = mus_sound_loop_info(filename)
4922: # if loop_info:
4923: # loop_modes = [loop_info[6], loop_info[7]]
4924: # loop_starts = [loop_info[0], loop_info[2]]
4925: # loop_ends = [loop_info[1], loop_info[3]]
4926: # base_note = loop_info[4]
4927: # base_detune = loop_info[5]
4928: #
4929: # loop_info = {'sustain_start' : loop_starts[0], 'sustain_end' : loop_ends[0],
4930: # 'release_start' : loop_starts[2], 'release_end' : loop_ends[1],
4931: # 'base_note' : base_note, 'base_detune' : base_detune,
4932: # 'sustain_mode' : loop_modes[0], 'release_mode' : loop_modes[1]}
4933: #
4934: # info = {'date' : time.localtime(date), 'srate' : srate, 'chans' : chans, 'samples' : samples,
4935: # 'comment' : comment, 'length' : length, 'header_type' : header_type, 'sample_type' : sample_type,
4936: # 'loop_info' : loop_info}
4937: # return info
4938:
4939: # def sound_loop_info(filename):
4940: # """returns a dictionary of info about a sound file including write date (data), sample rate (srate),
4941: # channels (chans), length in samples (samples), length in second (length), comment (comment), and loop information (loopinfo)"""
4942: #
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4944: # if loop_info:
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4946: # loop_starts = [loop_info[0], loop_info[2]]
4947: # loop_ends = [loop_info[1], loop_info[3]]
4948: # base_note = loop_info[4]
4949: # base_detune = loop_info[5]
4950: #
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4952: # 'release_start' : loop_starts[2], 'release_end' : loop_ends[1],
4953: # 'base_note' : base_note, 'base_detune' : base_detune,
4954: # 'sustain_mode' : loop_modes[0], 'release_mode' : loop_modes[1]}
4955: # return info
4956: #
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4958: # """
4959: # return an ndarray with samples from file
4960: # """
4961: # length = dur or csndlib.mus_sound_framples(filename)
4962: # chans = csndlib.mus_sound_chans(filename)
4963: # srate = csndlib.mus_sound_srate(filename)
4964: # bg = beg or 0
4965: # out = np.zeros(length, dtype=np.double)
4966: #
4967: # cdef double [:] out_view = None
4968: # out_view = out
4969: #
4970: # csndlib.mus_file_to_array(filename,channel, bg, length, &out_view[0])
4971: # return out
4972: #
4973: # def channel2array(filename: str, channel: Optional[int]=0, beg: Optional[int]=None, dur: Optional[int]=None):
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4975: # srate = mus_sound_srate(filename)
4976: # bg = beg or 0
4977: # out = np.zeros((1, length), dtype=np.double)
4978: # mus_file_to_array(filename,channel, bg, length, out[0].ctypes.data_as(ctypes.pointer(ctypes.c_double)))
4979: # return out
4980: #
4981: # def calc_length(start, dur):
4982: # st = seconds2samples(start)
4983: # nd = seconds2samples(start+dur)
4984: # return st, nd
4985: #
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5122: